An artistic illustration of a blazar accelerating cosmic rays, neutrinos and photons up to high energies, as observed in PeVatron blazars.
An artistic illustration of a blazar accelerating cosmic rays, neutrinos and photons up to high energies, as observed in PeVatron blazars. Neutrinos that reach our planet from the depths of the Universe originate from blazars. Astrophysicists have proven this for the first time. The Earth's atmosphere is continuously bombarded by cosmic rays. These consist of electrically charged particles of energies up to 1020 electron volts. That is a million times more than the energy achieved in the world's most powerful particle accelerator, the Large Hadron Collider near Geneva. The extremely energetic particles come from deep outer space, they have travelled billions of light years.
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